Quick Answer

QR1 and QR2 quick release systems are not interchangeable, but one is not universally better. QR2 offers a more compact design and reduced play, while QR1 remains a reliable, widely compatible option. Your choice depends on your wheelbase and wheel-side hardware, not on a single performance metric.

Myth: QR2 Is Always Better Than QR1

Many sim racers assume that the newer QR2 system is a strict upgrade over QR1 in every way. While QR2 does offer a shorter mounting depth and a slightly more rigid connection, QR1 is still a proven design with thousands of compatible wheels. The real difference is in the locking mechanism and tolerances, not in raw strength or feel.

QR1 uses a traditional collar-and-groove design that can develop a tiny amount of play over time if not maintained. QR2 uses a spring-loaded locking ring that reduces that play from the start. However, if you already own several QR1 wheels, switching to QR2 means replacing both the base side and every wheel side, which can be expensive and unnecessary unless you demand the absolute minimum play.

Myth: QR1 and QR2 Are Cross-Compatible

A common misunderstanding is that you can mix QR1 and QR2 components. They are not physically compatible without an adapter. The base side of QR1 has a different diameter and locking tab position than QR2. If you want to use a QR2 wheel on a QR1 base, you need a QR1-to-QR2 adapter, which adds length and can introduce its own play.

For example, the Ascher Racing Buchfink Q1R Base Side (product ID 1625609) is a QR1-style quick release that is known for its no-play design. It fits QR1 wheel sides and is a great option if you want a reliable connection without switching to QR2. If you later upgrade to a QR2 base, you would need to replace this base side.

Myth: All Quick Releases Have the Same Amount of Play

Play (the tiny movement between the wheel and base) varies significantly between quick release designs and even between individual units. A well-machined QR1 system like the Buchfink Q1R can have virtually no play, while a budget QR1 clone might wobble. QR2 is engineered to have minimal play out of the box, but that does not mean every QR1 system is loose.

The key is to check the manufacturing tolerances and materials. CNC-machined aluminum parts with tight tolerances (like the Q1R) will hold up better than cast or plastic components. If you already have a high-quality QR1 system, upgrading to QR2 may not give you a noticeable improvement in feel.

Verdicts on Common Quick Release Myths

  • QR2 is always better than QR1: False. QR2 offers a more compact design and reduced initial play, but QR1 systems like the Buchfink Q1R can match that performance. The upgrade cost may not be justified if you already own quality QR1 hardware. Evaluate your current setup before switching. If you have no play issues, stick with QR1.
  • QR1 and QR2 are cross-compatible: False. They are not directly compatible. Using an adapter adds length and potential play. If you plan to mix systems, test the adapter with your specific wheel and base. Plan your ecosystem. Choose one system and stick with it to avoid adapters.
  • All quick releases have the same amount of play: False. Play depends on manufacturing quality and design. A premium QR1 system can be as tight as QR2. Budget options in either system may have more play. Focus on build quality and tolerances, not just the generation number.

Products That Clear Up the Myths

  • Ascher Racing Buchfink Q1R Base Side: Base side of Holger Buchfink’s famous quick release Q1R. No play by definition. Quick and easy to change wheels. Base side & wheel side available separately. 50mm & 70mm wheel side available (both fit the same base side). This QR1-style quick release proves that a well-engineered QR1 system can achieve zero play, debunking the myth that only QR2 can offer a tight connection. It is a cost-effective upgrade for existing QR1 users.